39.93% is the change from 556 to 778
Calculation steps:
[( 778 - 556 ) ÷ 556] x 100 = 39.93%
Formula
Percentage change = [(778 - 556) / 556] x 100
Subtract the new number by the original number
778 - 556 = 222
222 ÷ 556 = 0.39928057553956836
0.39928057553956836 x 100 = 39.93%